DRTEST(8) | System Manager's Manual (vax) | DRTEST(8) |
drtest
—
stand-alone disk test program
drtest
is a stand-alone program used to
read a disk track by track. It was primarily intended as a test program for
new stand-alone drivers, but has shown useful in other contexts as well,
such as verifying disks and running speed tests. For example, when a disk
has been formatted (by
vax/format(8)), you can
check that hard errors has been taken care of by running
drtest
. No hard errors should be found, but in many
cases quite a few soft ECC errors will be reported.
While drtest
is running, the cylinder
number is printed on the console for every 10th cylinder read.
A sample run of drtest
is shown below. In
this example (using a 750), drtest
is loaded from
the root file system; usually it will be loaded from the machine's console
storage device. Boldface means user input. As usual, ``#'' and ``@'' may be
used to edit input.
>>>
B/3%%
loading hk(0,0)boot
Boot
:
hk(0,0)drtestTest program for stand-alone up and hp driver
Debugging level (1=bse, 2=ecc, 3=bse+ecc)?
Enter disk name [type(adapter,unit), e.g. hp(1,3)]?
hp(0,0)Device data: #cylinders=1024, #tracks=16, #sectors=32
Testing hp(0,0), chunk size is 16384 bytes.
(chunk size is the number of bytes read per disk access)Start ...Make sure hp(0,0) is online
...
(errors are reported as they occur)...
(...program restarts to allow checking other disks) (...to abort halt machine with ^P)
The diagnostics are intended to be self explanatory. Note, however, that the device number in the diagnostic messages is identified as typeX instead of type(a,u) where X = a*8+u, e.g., hp(1,3) becomes hp11.
The drtest
command appeared in
4.2BSD.
Helge Skrivervik
February 17, 2017 | NetBSD 10.99 |